Democrats Win Fresh Clout in Looming Data Privacy Bill Debate

House Democrats are likely to push for a robust data privacy law when they take control of the chamber next year.

The White House, individual lawmakers, industry groups, and top tech companies, including Microsoft Corp. proposed frameworks or drafted bills before the midterm elections—initial steps that will kick into high gear in the next Congress. Alphabet Inc.'s Google, Facebook Inc. and other tech giants are pressuring lawmakers to harmonize a patchwork of state data breach laws and preempt a California state privacy law.

Republicans, particularly in the Senate, have been preparing for the effort by holding hearings and drafting bills. ...